#include<stdio.h>
struct Student stu1 = { "Bulv", 20, 1001, 1, 90 };
struct Student stu2 = { "Feizhang", 22, 1002, 1, 95 }; 
stu1.id = 1003;
printf("%s\n", stu1.name);
printf("%d\n", stu1.age);
strcpy_s(stu1.name, 10, "caopi"); 
